CN102263878B - Image reading apparatus - Google Patents
Image reading apparatus Download PDFInfo
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- CN102263878B CN102263878B CN201110146516.3A CN201110146516A CN102263878B CN 102263878 B CN102263878 B CN 102263878B CN 201110146516 A CN201110146516 A CN 201110146516A CN 102263878 B CN102263878 B CN 102263878B
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- image
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- size
- reading device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
- H04N1/00684—Object of the detection
- H04N1/00708—Size or dimensions
- H04N1/00713—Length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
- H04N1/00729—Detection means
- H04N1/00734—Optical detectors
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
- H04N1/00742—Detection methods
- H04N1/0075—Detecting a change in reflectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
- H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
- H04N1/1017—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
- H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
- H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0081—Image reader
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/04—Scanning arrangements
- H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
- H04N2201/0446—Constructional details not otherwise provided for, e.g. mounting of scanning components
Abstract
An image reading apparatus includes image reader reading an image of a manuscript which is placed on a manuscript platen, and size detector detecting a size of the manuscript, wherein the image reader slides inside a chassis, which is arranged below the manuscript platen, in parallel to the manuscript platen and reads the image of the manuscript, wherein the size detector includes two light sensors each of which is composed of a pair of light emitter emitting light toward the manuscript platen from a position under the manuscript platen, and light receiver receiving reflection light which is reflected by the manuscript, wherein the light emitter and the light receiver are mounted on one substrate so that each line connecting the light emitter with the light receiver of the light sensor may be on one straight line, and wherein the size detector is arranged at one internal side area of the chassis, which does not overlap with an area through which the image reader slides, so that the line connecting the light emitter with the light receiver may be parallel to a sliding direction of the image reader.
Description
Technical field
The present invention relates to the image-reading device of the image for reading contribution, relating to particularly and being equipped with size sensor with test example as being placed on the image-reading device of the size of the contribution on manuscript stand.
Background technology
There is much known image-reading device, its respectively the contribution of detection arrangement on manuscript stand size and read the image of contribution.
First, general image-reading device will be described.Fig. 9 shows the key-drawing of the example of general image-reading device.In addition, Figure 10 show contribution 2 place in fig .9 the key-drawing of the state on the general image-reading device that illustrates of illustrating.The pass the imperial examinations at the provincial level image-reading device that exemplifies of Fig. 9 is included in size sensor 3 and the optical module 1 of frame 11 inside.The sub scanning direction that optical module 1 arrow S in fig .9 indicates slides the image reading contribution 2.The basal plane 12 that size sensor 3 is arranged on frame judges the size (length) of contribution 2.
Figure 11 shows size sensor 3 and is arranged on the state that Fig. 9 passes the imperial examinations at the provincial level on the general image-reading device that exemplifies.Size sensor 3 comprises luminescence unit 5, light receiving unit 6 and linkage unit 8.Luminescence unit 5, light receiving unit 6 and linkage unit 8 are arranged on substrate 7.In addition, cable retention unit 24 is arranged between optical module 1 and size sensor 3.
Here, description size sensor 3 is judged the method for the size of contribution 2.Figure 12 shows the key-drawing of the working method of size sensor 3.When above contribution 2 is placed on size sensor 3, the utilizing emitted light 9 sent by luminescence unit 5 irradiates contribution 2, is then received by light receiving unit 6 by the reverberation 10 that contribution 2 reflects.Size sensor 3 judges the position at contribution 2 place by receiving reverberation 10.On the other hand, when there is no contribution 2 above size sensor 3, not reflected by contribution 2 from the emergent light 9 of luminescence unit 5 output: because light receiving unit 6 does not receive any reverberation 10, therefore size sensor 3 judges there is not contribution 2 in this position.
Figure 10 shows the state that two above-mentioned size sensor 3 are arranged side by side.As mentioned above, each size sensor 3 judges whether the top of size sensor 3 exists contribution 2.Then, image-reading device finally judges the size (length) of contribution 2 based on the combination of the judgement of size sensor 3.
Below, description optical module 1 is carried out scanning the method with reading images.Figure 13 illustrates that Fig. 9 passes the imperial examinations at the provincial level the key-drawing of internal state of the general image-reading device exemplified.As shown in figure 13, except optical module 1, also leaded 16, guide rail 17, reel 18, motor 19 and lamp 20 are comprised in the inside of the frame 11 of image-reading device.Lamp 20 is arranged on optical module 1, and penetrates contribution 2 to read the image of contribution 2 from the illumination that light source 20 sends.
Optical module 1 is arranged on guide rail 17, and guide rail 17 is arranged in the inside of frame 11.Lead-in wire 16 is connected to the two ends of optical module 1.Each lead-in wire 16 is wound on reel 18.Reel 18 is by being driven by motor 19 and rotating.According to this structure, lead-in wire 16 drives reel 18 that reel 18 is rotated by motor 19 and is wound.By this way, optical module 1 is pulled to reel 18.At this moment, optical module 1 and contribution 2 slide to carry out scanning to read contribution 2 abreast.
Below, the structure of optical module 1 will be described.Figure 14 is the key-drawing that the sectional view that the A-A line of passing the imperial examinations at the provincial level the general image-reading device exemplified along Fig. 9 is got is shown.Optical module 1 comprises CCD (charge coupled device) 21, speculum 22 and lens 23.In addition, optical module 1 slides on the sub scanning direction indicated by arrow S.When contribution 2 is penetrated in the illumination sent by lamp 20, reflected repeatedly by several speculum 22 by the light that contribution 2 reflects.Then, reverberation is converged by lens 23.When the light through converging enters the pixel planes of CCD 21, charge conversion is the signal of telecommunication by CCD 21.By this way, optical module 1 reads the image of contribution 2.
Meanwhile, patent document 1 (Japanese Patent Application Publication No.1995-23182) discloses the contribution fetch equipment of the size judging the contribution be placed on manuscript stand.According to contribution fetch equipment disclosed in patent document 1, contribution detecting sensor be arranged on the basal plane of contribution fetch equipment, to the slip of optical unit without the position of interfering.Contribution detecting sensor detects the contribution be placed on manuscript stand optically.
General image read-out as shown in Figure 9 installs two size sensor 3 dividually, as shown in figure 11.Therefore, the space prepared in the central area of frame 11 for installation dimension transducer 3 is necessary.As a result, result in the external form of equipment on equipment in-plane and become large problem.According to general image read-out, size sensor 3 is arranged on immediately below the region of optical module 1 process.Therefore, the basal plane 12 of frame is necessary it is the shape from the downward projection of frame, to make size sensor 3 not contact optical module 1.Specifically, as shown in figure 14, need in the inside of frame 11 and arrange size sensor fixed component 13 on the basal plane 12 of frame.Therefore, result in the problem that frame 11 uprises due to the height of size sensor fixed part 13.
Summary of the invention
Target of the present invention be to provide the size sensor of the size comprised for detecting contribution and its external form can be miniaturized image-reading device.
A kind of image-reading device, comprising: cis, and it reads the image of the contribution be placed on manuscript stand, and size detector, it detects the size of contribution, wherein cis is being arranged in the inside of the frame below manuscript stand, slide abreast with manuscript stand, and read the image of contribution, wherein size detector comprises two optical sensors, each optical sensor is by a pair optical transmitting set and optical receiver composition, wherein optical transmitting set is from the position of the below of manuscript stand towards manuscript stand utilizing emitted light, and optical receiver receives the reverberation reflected by contribution, wherein optical transmitting set and optical receiver are installed on one substrate, the lines of the optical transmitting set and optical receiver that make each connect optical sensor can be point-blank, and the wherein size detector nonoverlapping inner side edge region place, region slid through with cis that is arranged in frame, making to connect optical transmitting set can be parallel with the glide direction of cis with the lines of optical receiver.
Accompanying drawing explanation
By reference to the accompanying drawings, example feature of the present invention and advantage become clear by from detailed description below, wherein:
Fig. 1 shows the key-drawing of the exemplary embodiment according to image-reading device of the present invention;
Fig. 2 shows the key-drawing of the example of the size sensor 4 according to exemplary embodiment;
Fig. 3 shows the key-drawing of the example of the size sensor 4 be fixed by transducer holding unit 14;
Fig. 4 shows the key-drawing of the sectional view that the C-C line along the image-reading device shown in Fig. 1 is got;
Fig. 5 shows the key-drawing of the stereogram in the cross section that the B-B line along the image-reading device shown in Fig. 1 is got;
Fig. 6 shows the key-drawing of the sectional view that the B-B line along the image-reading device shown in Fig. 1 is got;
Fig. 7 shows the key-drawing of the sectional view that the D-D line along the image-reading device shown in Fig. 1 is got;
Fig. 8 shows the key-drawing of the example of the minimal structure according to image-reading device of the present invention;
Fig. 9 shows the key-drawing of the example of general image-reading device;
Figure 10 shows the key-drawing that contribution is placed on the state on general image-reading device;
Figure 11 shows the key-drawing that size sensor is arranged on the state on general image-reading device;
Figure 12 shows the key-drawing of the working method of the size sensor be arranged on general image-reading device;
Figure 13 shows the key-drawing of the internal state of general image-reading device; And
Figure 14 shows the key-drawing of the sectional view that the A-A line along the image-reading device shown in Fig. 9 is got.
Embodiment
Exemplary embodiment of the present invention will be described with reference to the accompanying drawings in detail below.
(the first exemplary embodiment)
Hereinafter, exemplary embodiment of the present invention will be described with reference to the drawings.
Fig. 1 shows the key-drawing of the exemplary embodiment according to image-reading device of the present invention.In addition, the main scanning direction of image-reading device, sub scanning direction and short transverse are expressed as X-direction, Y-direction and Z-direction in the following description.Optical module 1 and size sensor 4 is comprised according to the image-reading device of exemplary embodiment.
Optical module 1 above slides at sub scanning direction (Y-direction) and reads the image of contribution.
Size sensor 4 detects the length of contribution in the glide direction (that is, sub scanning direction) of optical module 1.Preferably, such as, the random time of size sensor 4 before the contribution lid of image-reading device closes on contribution detects the size of contribution.
Although facsimile machine and photocopier can be used as the example of concrete image-reading device, image-reading device is not limited to these equipment.Size sensor 4 is fixed to one end (side) of frame 11 with the state tilted by transducer holding unit 14.
Fig. 2 shows the key-drawing of the example of the size sensor 4 according to exemplary embodiment.Size sensor 4 comprises two luminescence units, 5, two light receiving units 6 and linkage unit 8.Form the luminescence unit 5 of a pair and a light receiving unit 6 to detect and whether have contribution to be placed on manuscript stand.Luminescence unit 5 and light receiving unit 6 are connected to each other with signal transmission by linkage unit 8.
Fig. 3 shows the key-drawing of the state that wherein size sensor 4 is fixed obliquely by transducer holding unit 14.Transducer holding unit 14 is formed can not to receive light to luminescence unit 5 luminescence and light receiving unit 6 and produces interference.In addition, transducer holding unit 14 is formed as making luminescence unit 5 and light receiving unit 6 can upward opening.
As shown in Figure 1, size sensor 4 is arranged obliquely, the axis of the light sent by luminescence unit 5 is positioned at a right angle with plane X-Z and with in the plane of plane Y-Z (shown in Figure 4 particularly) into θ angle.In addition, size sensor 4 frame 11 internal placement contribution against the below of that side.Here, angle θ has determine as follows arbitrarily angled: the axis that this angle is confirmed as the light that size sensor 4 (more specifically, luminescence unit 5) is sent can enter the inside of the opening be made up of glass.In addition, size sensor 4 is arranged so that connection luminescence unit 5 can be parallel with sub scanning direction with the lines of light receiving unit 6.
Fig. 4 shows the sectional view that the C-C line along the image-reading device shown in Fig. 1 is got.Example in Fig. 4 shows size sensor 4 and places obliquely relative to X-Y plane.As mentioned above, size sensor 4 place the axis making the light sent by luminescence unit 5 obliquely can in vertical direction with angle θ.Therefore, even if size sensor 4 is not arranged on the basal plane of frame 11, also can judge whether contribution is placed on manuscript stand.
Luminescence unit 5 sends light (emergent light) towards manuscript stand.In addition, light receiving unit 6 receives the light (reverberation) reflected by contribution 2.Specifically, the emergent light sent due to luminescence unit 5 is by contribution 2 diffuse reflection, and light receiving unit 6 receives by the irreflexive reverberation of contribution 2.If luminescence unit 5 sends emergent light and light receiving unit 6 is received in the reverberation reflected by contribution 2 after emergent light irradiates contribution 2, then size sensor 4 predicates and there is contribution.On the other hand, if light receiving unit 6 does not receive any reverberation, then size sensor 4 predicates and there is not contribution.
On substrate 7, often pair of luminescence unit 5 and light receiving unit 6 and another is to neighboringly arranging.In addition, luminescence unit 5 and light receiving unit 6 be arranged on every bar lines substrate 7 making be connected with light receiving unit 6 by the luminescence unit 5 belonging to a pair can be point-blank.In addition, linkage unit 8 is arranged on substrate 7 abreast with luminescence unit 5 and light receiving unit 6.In this case, each in luminescence unit 5 and light receiving unit 6 is arranged such that a light receiving unit 6 in the middle of two light receiving units 6 (that is, two adjacent light receiving units 6) can receive its direction light relative with the direction of the light received by another light receiving unit 6.As a result, the emergent light carrying out selfluminous cell 5 can not enter adjacent light receiving unit 6 (i.e. the non-light receiving unit partnered).
Specifically, two couple that luminescence unit 5 and light receiving unit 6 form is central, a pair luminescence unit 5 and the light receiving unit 6 that belong to close contribution reading starting position are arranged in the following order, and namely luminescence unit 5 reads starting position near contribution more than light receiving unit 6.On the other hand, belong to another right luminescence unit 5 and light receiving unit 6 is arranged in the following order, namely light receiving unit 6 starts load position near contribution more than luminescence unit 5.In other words, the order of placement belonging to the order of placement of the luminescence unit 5 of a pair and light receiving unit 6 luminescence unit 5 right with belonging to another and light receiving unit 6 is contrary.That is, with regard to the layout of luminescence unit 5 and light receiving unit 6, a luminescence unit 5 in the middle of two luminescence units 5 is arranged to distance contribution, and to start load position nearest, and another luminescence unit 5 is arranged to distance contribution starts load position farthest.
As mentioned above, it is two right that size sensor 4 has, and often pair is made up of luminescence unit 5 and light receiving unit 6.In addition, luminescence unit 5 and light receiving unit 6 be arranged on each bar lines substrate 7 making be connected with light receiving unit 6 by luminescence unit 5 can be point-blank.Because all luminescence units 5 and light receiving unit 6 are arranged point-blank as mentioned above, therefore size sensor 4 can be treated as parts.
Size sensor 4 and transducer holding unit 14 utilize optical module 1 without space arrange, even if so that optical module 1 is through also not contact optical module 1.As Fig. 4 illustrate and illustrate, such as, size sensor 4 is arranged between guide rail 17, and the two ends that guide rail 17 is arranged in frame 11 internal main scanning direction are sentenced and optical module 1 is moved.Because size sensor 4 is arranged between 17 as mentioned above, the degree of depth of frame therefore can be made less.As a result, device miniaturization can be made.
Because optical module 1 reads contribution from the position below manuscript stand, therefore manuscript stand is made with glass usually for the region (opening) of reading contribution.Then, size sensor 4 is arranged in the position of region overlapping that frame 11 is inner, can not arrive with the glass open region upright projection of manuscript stand.By size sensor 4 is arranged in above-mentioned position, the exterior light that the position above contribution fetch equipment sends can be reduced, such as, from the light of daylight source.As a result, the false judgment to contribution size can be reduced.
In addition, preferably size sensor 4 is arranged in not overlapping with the region that glass open region is vertically projected to and (more specifically, be the space formed by the track of optical module 1 and 17) between guide rail 17 position.As a result, the basal plane of frame 11 upwards can be risen to the bottom surface of optical module 1.As a result, equipment can be avoided very high and the bottom surface of frame 11 can be made to be almost flat.
Transducer holding unit 14 can also be utilized to be fixed on the basal plane of frame 11 by the FFC 15 be connected with optical module 1.By utilizing transducer holding unit 14 to fix FFC 15, the quantity of the assembly used in image-reading device can be reduced.
Below, mode of operation will be described.Fig. 5 shows the key-drawing of the stereogram in the cross section that the B-B line along the image-reading device shown in Fig. 1 is got.Fig. 6 shows the key-drawing of the sectional view that the B-B line along the image-reading device shown in Fig. 1 is got.
Image-reading device shown in Fig. 5 or Fig. 6 is included in the lead-in wire 16 of frame 11 inside, guide rail 17, reel 18 and motor 19.
Optical module 1 be placed on be arranged in frame 11 inside guide rail 17 on.Lead-in wire 16 is connected respectively to the two ends of optical module 1 on main scanning direction.Reel 18 is arranged on the direction (sub scanning direction) at a right angle with main scanning direction.Each bar of lead-in wire 16 is wound on reel 18.One in reel 18 is connected to motor 19.Drive reel 18 by motor 19, each spool shaft 25 via being connected to each other by reel 18 of two reels 18 is by each lead-in wire 16 winding.By winding lead-in wire 16, drag optical module 1 along guide rail 17.As a result, optical module 1 and contribution 2 slide to carry out scanning abreast and carry out reading images.
Fig. 7 shows the key-drawing of the sectional view that the D-D line along the image-reading device shown in Fig. 1 is got.Optical module 1 comprises light source 20, CCD 21, speculum 22 and lens 23.When light source 20 towards contribution 2 luminescence with reading images, emergent light arrives the contribution 2 be placed on the manuscript stand 26 be made up of glass.Then, the light irradiating contribution 2 is repeatedly reflected by several speculum 22.Then, reverberation scioptics 23 converge.Then, when the light through converging enters the pixel planes of CCD 21, charge conversion is the signal of telecommunication by CCD 21.By this way, optical module 1 reads the image of contribution 2.
In addition, the emergent light 9 sent by each luminescence unit 5 is reflected by contribution 2 respectively.Received by forming right light receiving unit 6 together with luminescence unit 5 by the reverberation 10 that contribution 2 reflects.By this way, size sensor 4 detects the size (length) of contribution.
As mentioned above, according to the image-reading device of exemplary embodiment, optical module 1 slides abreast in the inside of the frame 11 be arranged in below manuscript stand, along sub scanning direction (Y-direction) and manuscript stand, and then reads the image of contribution 2.In addition, size sensor 4 have two right to what be made up of luminescence unit 5 and light receiving unit 6.
Luminescence unit 5 and light receiving unit 6 are arranged on substrate 7, make each bar lines between the luminescence unit 5 that partners and light receiving unit 6 can be point-blank.In addition, nonoverlapping inner side edge region place, region that size sensor 4 is arranged in frame 11, that slide through with optical module 1, makes to connect luminescence unit 5 and becomes parallel with sub scanning direction with the lines of light receiving unit 6.
Utilize said structure, the external form of the frame of the image-reading device with the size sensor detecting contribution size can be made miniaturized.
That is, according to the image-reading device of exemplary embodiment, optical module 1 reads the image of contribution 2 on sub scanning direction.For this reason, size sensor 4 is arranged on the rear side (wherein optical module 1 can not slide into herein) of the basal plane of frame 11, optical module 1 is become parallel with the sub scanning direction illustrated in Fig. 1.In addition, according to the image-reading device of exemplary embodiment, as shown in Figure 4, size sensor 4 is arranged to angled with the space saved for installation dimension transducer 4 with X-Y plane.As a result, as shown in Figure 7, size sensor 4 can be avoided to be installed to be form outside the scope projecting into frame basal plane downwards.For this reason, the basal plane of frame 11 height that is smooth and restriction frame 11 further and the degree of depth can be made.As a result, the equipment that its external form can be provided to be miniaturized.
Such as, when general image-reading device, arrange two size sensor 3 dividually as shown in figure 11.For this reason, there is such problem, namely for the assembly of fixed dimension transducer 3 number, increase for the cost of the installation time of installation component and assembly.When judging the size of contribution 2 closely, needing the number of increase size sensor 3 and increasing the assembly for installation dimension transducer 3 further.For this reason, there is such problem, namely equipment becomes costly.
But according to exemplary embodiment, all luminescence units 5 and light receiving unit 6 are arranged to straight line as shown in Figure 2 on a substrate 7 and size sensor 4 is configured to an assembly.As a result, there is no need to use the assembly for fixed dimension transducer 4 and therefore can reduce the set-up time and reduce the price of equipment.
In addition, such as, when general image-reading device, size sensor 3 is towards upper installation as shown in figure 12.For this reason, if size sensor 3 have received such as from the exterior light that the position above image-reading device of the light and so on of fluorescent lamp sends, then size sensor 3 may judge received only by reverberation 10 that contribution 2 reflects under many circumstances.As mentioned above, size sensor 3 can not correctly judge the size (length) of contribution 2 in some cases.
But according to exemplary embodiment, size sensor 4 is arranged so that, the optical axis of the reverberation 10 that the optical axis of the emergent light 9 sent from luminescence unit 5 and light receiving unit 6 receive can be angled with plane Y-Z.In addition, size sensor 4 do not arrange by the glass open upright projection of manuscript stand to region in.Utilize this structure, the exterior light that can prevent the position above equipment from sending directly enters size sensor 4.As a result, the accuracy required by size (length) detecting contribution 2 can be improved.
Below, the example according to the minimal structure of image-reading device of the present invention will be described.Fig. 8 shows the key-drawing of the example of the minimal structure according to image-reading device of the present invention.Image-reading device according to the present invention comprises cis 81 and size detector 82.Cis 81 (such as, optical module 1) reads the image of the contribution (such as, contribution 2) be placed on manuscript stand.Size detector 82 (such as, size sensor 4) detects the size (such as, size or length) of contribution.
Cis 81 be arranged in the frame below manuscript stand (such as, frame 11) inner with manuscript stand abreast (such as, in the Y-direction of Fig. 1) slide, then read the image of contribution.
Size detector 82 comprises two optical sensors 90, and it is each by a pair optical transmitting set 91 and optical receiver 92 (such as, a pair luminescence unit 5 and light receiving unit 6) composition.Optical transmitting set 91 (such as, luminescence unit 5) is from the position below manuscript stand towards manuscript stand utilizing emitted light (such as, emergent light 9).Optical receiver 92 (such as, light receiving unit 6) receives the reverberation (such as, reverberation 10) reflected by contribution.
Optical transmitting set 91 and optical receiver 92 are arranged on a substrate (such as, substrate 7), make each bar lines connecting optical transmitting set 91 and optical receiver 92 can be point-blank.
In addition, in the nonoverlapping inner side edge region in region slid through with optical module 1 that size detector 82 is arranged in frame, the lines connecting optical transmitting set 91 and optical receiver 92 are made to become with the glide direction of cis 81 (such as, sub scanning direction) parallel.
Utilize this structure, the external form of the frame of the image-reading device with the size sensor detecting contribution size can be made miniaturized.
In addition, preferably, in the middle of two optical sensors 90, the optical transmitting set 91 and the optical receiver 92 that belong to an optical sensor 90 of close contribution reading starting position (cis 81 starts to read contribution herein) are arranged as following order, and namely optical transmitting set 91 reads starting position near contribution more than optical receiver 92.On the other hand, preferably, the optical transmitting set 91 and the optical receiver 92 that belong to another optical sensor 90 are arranged as following order, and namely optical receiver 92 reads starting position (with reference to figure 2) near contribution more than optical transmitting set 91.
In addition, preferably, size detector 82 is arranged obliquely, makes the axis of the light sent by optical transmitting set 91 become predetermined angle (such as, angle θ) with vertical direction.As a result, even if size detector 82 is not arranged on basal plane, also can judge whether contribution is placed on manuscript stand.
In addition, preferably, size detector 82 is arranged in the nonoverlapping position, region arrived with the glass open upright projection of manuscript stand.Utilize this structure, the precision required for size (length) detecting contribution 2 can be improved.
In addition, preferably, size detector 82 is arranged between guide rail (such as, guide rail 17), and the two ends that this guide rail is arranged in the internal main scanning direction of frame are sentenced and cis 81 is moved.By this structure, the size of frame can be made less in the depth direction.As a result, device miniaturization can be made.
In addition, preferably, basal plane is almost even shape.
In addition, preferably, image-reading device comprises the sensor holder (such as, transducer holding unit 14) of inner side edge region size detector being fixed to frame.And preferably, the flat cable (such as, FFC15) that cis 81 and size detector 82 are connected to each other is fixed to the basal plane of frame by sensor holder.Utilize this structure, the number of the assembly used in image-reading device can be reduced.
Although can describe part or all of above-mentioned exemplary embodiment as following addition Item, exemplary embodiment is not limited to addition Item described later.
(addition Item 1) a kind of image-reading device, comprising:
Cis, it reads the image of the contribution be placed on manuscript stand; And
Size detector, it detects the size of described contribution, wherein
Described cis is being arranged in the inside of the frame below described manuscript stand, is sliding abreast with described manuscript stand, and reads the described image of described contribution, wherein
Described size detector comprises two optical sensors, each described optical sensor is by a pair optical transmitting set and optical receiver composition, wherein said optical transmitting set is from the position below described manuscript stand towards described manuscript stand utilizing emitted light, and described optical receiver is for receiving the reverberation reflected by described contribution, wherein
Described optical transmitting set and described optical receiver are installed on one substrate, make each lines be connected with described optical receiver by described optical transmitting set of described optical sensor can point-blank, and wherein
The nonoverlapping inner side edge region place, region slided into described cis that described size detector is arranged in described frame, makes the described lines be connected with described optical receiver by described optical transmitting set can be parallel with the glide direction of described cis.
(addition Item 2) according to the image-reading device of addition Item 1, wherein
In the middle of two optical sensors, belong to the contribution starting to read described contribution with described cis and read the described optical transmitting set of a close optical sensor of starting position and described optical receiver is arranged in the following order, namely described optical transmitting set reads starting position near described contribution more than described optical receiver, and wherein
The described optical transmitting set and the described optical receiver that belong to another optical sensor are arranged in the following order, and namely described optical receiver reads starting position near described contribution more than described optical transmitting set.
(addition Item 3) according to the image-reading device of addition Item 1, wherein
Described size detector is arranged obliquely, makes axis and the vertical direction angulation of the light sent from described optical transmitting set.
(addition Item 4) according to the image-reading device of addition Item 1, wherein
The inside that described size detector is arranged in described frame, the nonoverlapping position, region arrived with the glass open upright projection of described manuscript stand.
(addition Item 5) according to the image-reading device of addition Item 1, wherein
Described size detector is arranged between the guide rails, and the two ends that wherein said guide rail is arranged in the internal main scanning direction of described frame are sentenced and described cis is moved.
(addition Item 6) according to the image-reading device of addition Item 1, wherein
The basal plane of described frame is almost even shape.
(addition Item 7), according to the image-reading device of addition Item 1, comprising:
Sensor holder, described size detector is fixed to a medial end of described frame by it, wherein
Flat cable is fixed to the basal plane of described frame by described sensor holder, and wherein said flat cable connects described cis and described size detector.
(addition Item 8) a kind of image-reading device, comprising:
Image read-out, it is for reading the image of the contribution be placed on manuscript stand; And
Size detecting device, it is for detecting the size of described contribution, wherein
Described image read-out is being arranged in the inside of the frame below described manuscript stand, is sliding abreast and read the described image of described contribution, wherein with described manuscript stand
Described size detecting device two optical sensors, each described optical sensor is by a pair light emitting devices and optical pickup apparatus composition, described light emitting devices is used for from the position below described manuscript stand towards described manuscript stand utilizing emitted light, and described optical pickup apparatus is for receiving the reverberation reflected by described contribution, wherein
Described light emitting devices and described optical pickup apparatus are installed on one substrate, make each lines be connected with described optical pickup apparatus by described light emitting devices of described optical sensor can point-blank, and wherein
A nonoverlapping inner side edge region place, region that described size detecting device is arranged in described frame, that slide through with described image read-out, makes the described lines be connected with described optical pickup apparatus by described light emitting devices can be parallel with the glide direction of described image read-out.
According to image-reading device disclosed in patent document 1, contribution detecting sensor is installed as the form of projection on the direction at the center of substrate.Therefore, the sliding position needing to make optical unit is higher with the slip making contribution detecting sensor not disturb optical unit.Thus, there is such problem, namely because the position of optical unit is higher and external form becomes larger.
According to the present invention, the external form of the frame of the image-reading device including the size sensor detecting contribution size can be made miniaturized.
Although reference example embodiment is shown particularly and described the present invention, the invention is not restricted to these embodiments.It will be apparent to one skilled in the art that the change can making various forms and details when not departing from the spirit and scope of the present invention as defined by the appended claims.
In addition, even if inventor wishes to modify claim in course of the review, the equivalent of invention required for protection is also retained.
The Japanese patent application No.JP 2010-119671 that the application submitted based on May 25th, 2010, and require to enjoy its priority, it is openly incorporated into this by reference and in full.
Claims (7)
1. an image-reading device, comprising:
Cis, it reads the image of the contribution be placed on manuscript stand; And
Size detector, it detects the size of described contribution, wherein
Described cis is being arranged in the inside of the frame below described manuscript stand, is sliding abreast with described manuscript stand, and reads the described image of described contribution, wherein
Described size detector comprises two optical sensors, each described optical sensor is by a pair optical transmitting set and optical receiver composition, wherein said optical transmitting set is from the position below described manuscript stand towards described manuscript stand utilizing emitted light, and described optical receiver is for receiving the reverberation reflected by described contribution, wherein
Described optical transmitting set and described optical receiver are installed on one substrate, make each lines be connected with described optical receiver by described optical transmitting set of described optical sensor can point-blank, and wherein
The nonoverlapping inner side edge region place, region slid through with described cis that described size detector is arranged in described frame, make the described lines be connected with described optical receiver by described optical transmitting set can be parallel with the glide direction of described cis, and
Described image-reading device also comprises:
Sensor holder, described size detector is fixed to a medial end of described frame by it, wherein
Flat cable is fixed to the basal plane of described frame by described sensor holder, and wherein said flat cable connects described cis and described size detector.
2. image-reading device according to claim 1, wherein
In the middle of two optical sensors, belong to the contribution starting to read described contribution with described cis and read the described optical transmitting set of a close optical sensor of starting position and described optical receiver is arranged in the following order, namely described optical transmitting set reads starting position near described contribution more than described optical receiver, and wherein
The described optical transmitting set and the described optical receiver that belong to another optical sensor are arranged in the following order, and namely described optical receiver reads starting position near described contribution more than described optical transmitting set.
3. image-reading device according to claim 1, wherein
Described size detector is arranged obliquely, makes axis and the vertical direction angulation of the light sent from described optical transmitting set.
4. image-reading device according to claim 1, wherein
The inside that described size detector is arranged in described frame, the nonoverlapping position, region arrived with the glass open upright projection of described manuscript stand.
5. image-reading device according to claim 1, wherein
Described size detector is arranged between the guide rails, and the two ends that wherein said guide rail is arranged in the internal main scanning direction of described frame are sentenced and described cis is moved.
6. image-reading device according to claim 1, wherein
The basal plane of described frame is almost even shape.
7. an image-reading device, comprising:
Image read-out, it is for reading the image of the contribution be placed on manuscript stand; And
Size detecting device, it is for detecting the size of described contribution, wherein
Described image read-out is being arranged in the inside of the frame below described manuscript stand, is sliding abreast and read the described image of described contribution, wherein with described manuscript stand
Described size detecting device comprises two optical sensors, each described optical sensor is by a pair light emitting devices and optical pickup apparatus composition, described light emitting devices is used for from the position below described manuscript stand towards described manuscript stand utilizing emitted light, and described optical pickup apparatus is for receiving the reverberation reflected by described contribution, wherein
Described light emitting devices and described optical pickup apparatus are installed on one substrate, make each lines be connected with described optical pickup apparatus by described light emitting devices of described optical sensor can point-blank, and wherein
A nonoverlapping medial end place, region that described size detecting device is arranged in described frame, that slide through with described image read-out, make the described lines be connected with described optical pickup apparatus by described light emitting devices can be parallel with the glide direction of described image read-out, and
Described image-reading device also comprises:
Sensor holder, described size detector is fixed to a medial end of described frame by it, wherein
Flat cable is fixed to the basal plane of described frame by described sensor holder, and wherein said flat cable connects described cis and described size detector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010119671A JP5019239B2 (en) | 2010-05-25 | 2010-05-25 | Image reading device |
| JP2010-119671 | 2010-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102263878A CN102263878A (en) | 2011-11-30 |
| CN102263878B true CN102263878B (en) | 2015-05-20 |
Family
ID=45010317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110146516.3A Expired - Fee Related CN102263878B (en) | 2010-05-25 | 2011-05-25 | Image reading apparatus |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20110292465A1 (en) |
| JP (1) | JP5019239B2 (en) |
| CN (1) | CN102263878B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140063575A1 (en) * | 2012-08-30 | 2014-03-06 | Stacy M. Munechika | Multi-resolution segmented image sensor |
| TWD166688S (en) * | 2014-03-10 | 2015-03-21 | 虹光精密工業股份有限公司 | Scanner |
| JP6740637B2 (en) | 2016-02-29 | 2020-08-19 | ブラザー工業株式会社 | Image processing device |
| JP7157652B2 (en) * | 2017-12-25 | 2022-10-20 | キヤノン株式会社 | Document reader |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324770A (en) * | 2000-05-18 | 2001-11-22 | Canon Inc | Image forming device, and its control method and recording medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69321405T2 (en) * | 1992-07-10 | 1999-05-12 | Sharp Kk | Document size detection system to be used in a document reader |
| JPH0723182A (en) * | 1993-06-30 | 1995-01-24 | Matsushita Graphic Commun Syst Inc | Original reader |
| JPH0799562A (en) * | 1993-09-28 | 1995-04-11 | Minolta Co Ltd | Original reader |
| US5693933A (en) * | 1993-09-28 | 1997-12-02 | Minolta Co., Ltd. | Device for dtecting the size of an original document in a document reader |
| US5500725A (en) * | 1993-09-28 | 1996-03-19 | Minolta Co., Ltd. | Original document reading device capable of automatically detecting the size of an original document |
| JPH0799563A (en) * | 1993-09-28 | 1995-04-11 | Minolta Co Ltd | Original reader |
| JPH08214127A (en) * | 1995-02-01 | 1996-08-20 | Fuji Xerox Co Ltd | Image reader |
| JPH08279884A (en) * | 1995-02-08 | 1996-10-22 | Ricoh Co Ltd | Image forming device |
| JP3666954B2 (en) * | 1995-10-24 | 2005-06-29 | キヤノン株式会社 | Copying machine and its control apparatus and method |
| JP3375033B2 (en) * | 1995-12-11 | 2003-02-10 | 株式会社リコー | Original image reading device |
| JP2924751B2 (en) * | 1996-01-08 | 1999-07-26 | 富士ゼロックス株式会社 | Image reading device |
| JPH10103926A (en) * | 1996-07-16 | 1998-04-24 | Omron Corp | Multipoint photosensor and electronic copier |
| JPH10171218A (en) * | 1996-12-09 | 1998-06-26 | Canon Inc | Image forming device |
| JP2000134413A (en) * | 1998-08-19 | 2000-05-12 | Rohm Co Ltd | Image sensor unit and image scanner provided with the unit |
| JP2003179727A (en) * | 2001-12-07 | 2003-06-27 | Canon Inc | Image reader and control method therefor |
| JP4054685B2 (en) * | 2003-01-15 | 2008-02-27 | キヤノン株式会社 | Image reading device |
| JP3922379B2 (en) * | 2004-07-02 | 2007-05-30 | コニカミノルタビジネステクノロジーズ株式会社 | Image reading device |
| JP4374003B2 (en) * | 2006-08-08 | 2009-12-02 | シャープ株式会社 | Document size detector |
| JP5473355B2 (en) * | 2008-03-18 | 2014-04-16 | キヤノン株式会社 | Document reader |
-
2010
- 2010-05-25 JP JP2010119671A patent/JP5019239B2/en not_active Expired - Fee Related
-
2011
- 2011-05-09 US US13/103,897 patent/US20110292465A1/en not_active Abandoned
- 2011-05-25 CN CN201110146516.3A patent/CN102263878B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001324770A (en) * | 2000-05-18 | 2001-11-22 | Canon Inc | Image forming device, and its control method and recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011250029A (en) | 2011-12-08 |
| US20110292465A1 (en) | 2011-12-01 |
| JP5019239B2 (en) | 2012-09-05 |
| CN102263878A (en) | 2011-11-30 |
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